From b8d1492265ef95e668d44ae1553ec6dc7f8336ca Mon Sep 17 00:00:00 2001
From: Roland Conybeare <rconybeare@gmail.com>
Date: Sun, 15 Feb 2026 13:13:41 -0500
Subject: [PATCH] xo-arena: impl for DArena ctor w/ ArenaConfig arg

---
 src/arena/DArena.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/arena/DArena.cpp b/src/arena/DArena.cpp
index 32cb7c8..cb305f9 100644
--- a/src/arena/DArena.cpp
+++ b/src/arena/DArena.cpp
@@ -65,6 +65,11 @@ namespace xo {
             return DArena(cfg, page_z, align_z, span.lo(), span.hi());
         } /*map*/
 
+        DArena::DArena(const ArenaConfig & cfg)
+        {
+            *this = std::move(map(cfg));
+        }
+
         DArena::DArena(const ArenaConfig & cfg,
                        size_type page_z,
                        size_type arena_align_z,